Wrench



Patented Sept. l1, 1923.

JOHN r. condemn, or cnrcaeogrtmnors.

WRENCH.

Application med october 12, 1921. seran No. 507,253.

To @ZZ whom t may concern:

Be it known that I, flor-1N P. COUGHLIN, a citizen of the United States, and resident of Chicago, in the county ot Cook and State of Illinois, have invented a certain new and useful Improvement in lWrenches, of which the following' is a full, clear, concise, and

exact description, reference being had to the accompanying drawings, forming a part of this specification.`

My invention relates to wrenches and has for its principal object the provision .of a device of this kind which may be used either as a pipe wrench or a monkey wrench.

`It is another object of my invention to provide a device that will bequickly and easily adjustable to operate with equal facility asa pipe or monkey wrench. n

' Another object is to provide a device which is light in weight, neat appearing,fand economically manufactured.

It is an important object of my invention to provide aidevice that embodies all of the foregoing features which may be easily and quickly assembled. i

These and other objects of my invention will clearly appear 'by reference to the accompanying description and to thev accom pany drawings in which` FigureV 1 is a view in elevation of the preferred ormof my device, some of the parts being shown in dotted' lines construction, 1.

Figure 2 is a-view in elevation showing the position assumed bythe parts when the device is used as a pipe wrench,

Figures 3 andy 4 are respectively elevation and sectional views of a n'ut case forming a part of my improved device,

Figures 5 and 6 are detailed views, Figure 6 being taken on the line l6 6 of Figure 7 Figure 7 is a detailed view of'aplunger forming part of my device,

Figure 8 is a fragmentary view olla modiiied form of my device, and

' Figure 9 is a sectional view taken on the line 9-9 of Figure '8.

Similar characters of reference referto similar parts tlirougholiit the several views.

In the drawings 8 indicates a handle provided with a shank 9 having a` stationary jaw 10, the sha'nk 9 being provided with a sleeve 11, through which -sleeveextends a movable shank 12 provided with teeth 13 and a jaw 14 formedl integral with the shank 12. The shank 9 has an opening 15 cylindrito illustrate the cal in shape into which is adapted to beinserted a nut case 16, illustrated in Figures 1 to l inclusive. The nut case 16 is bifurcated at 17 for the reception or a threaded nut 18, the teeth of which are adapted for engagement with the teeth 13 oit the shank 12. A pin 19 extends through apertures 20-20 formed in the nut case 16 to provide a rotatable mounting for the nut 18. The nut case 16 is slotted at 21-21 for the reception of the movable shank 12.

As illustrated most clearly in Figure 7, the shank 9 is recessed at 22 to receive a dog or plunger 23 and a helical spring 24. The stem 2.3 of the plunger 23 is notched at 26 so that the spring 24 may be bent and attached to the stem 25 by insertion in the notch 26. The base 27 of the spring 24 is of greater idiameter than the remainder of the spring so that these convolutions may `engage the walls Vont rthe recess 22 and hold the plunger in 4the position illustrated in Figure 7. lith this arrangement, the spring 241 holds the plunger 23 in a position so that the shoulder 28 ot the plun ger engages the inner walls cic the recess 22 and cannot be accidentally displaced. As best shown in Figures 5 und 6. the recess 22 is formed adjacent the wall 29 oit the sleeve 11. Immediately adjacent the recess 24: is a shelll 3() upon which thc 'tace 31 ot the plunger is adapted to rest when in the position illustrated in Figure 5.

rIt will' he seen that the nut case 16 and the shank 12 are rotatably mounted so that when the plunger `23 lies within the recess 22, the device may he used as a pipe wrench for securing a firm grip on objectsvot cylindrical cross section. It will also be seen that the spring 24, acting upon the plunger 23, will act to keep the wrench jaws in a parallel relationship.

Then it is desired to use the device as a monkey wrench, in which use the jaws 10 and 1+i should remain in parallel relation 'to cach other, the linger portion 2e l ot the plunger 23 is lifted outwardly slightly to reinove the shoulder 2S from the recess 22. The linger piece 23 is then rotated to the position illustrated in Figure 5, in which position lthe fare 31 of the plunger rests on the shelf 30. In this position the plunger 23 engages' the shank 12 and prevents its rotation about the center of thenut case 16. It will`- be noted that the spring 24 is maderof a-length to yhold the shoulder 28 within the recess 22 so that when the plunger is removed from the recess and the face 31 rests upon the shelf 30, the tension of the spring holds the plunger in this position to prevent accidental displacement.

If desired, the shelf 30 may be inclined` away from the recess 2Q so that the face 31" tends to slide away from the recess to further prevent accidental displacement of the plunger. v i l In the assembly of the device just described, after attaching the spring 211 to the stem 25 of the plunger, the spring 2i is sprung into the recess Q2, whereby thc plunger 23 is held in position. The nut 18 is then disposed within the bifurcation 17 and the pin 19 extended through the aperturesQO--QO and the nut 18. The nut case is then disposed within the opening 15, the slots 21-21beingaligned with the shank 12. Upon rotation of the nut 18, the threads thereof engage the teeth 18, whereby the shank 12, and thus the jaw 14, may be brought into operative Yrelationship with the jaw 10. i

In Figures 8 and 9, 1 have illustrated a modifiedv form of device in so far as the nut case is concerned. In thismodiiication, the'shank 9 is provided with an opening 35, and to provide means for the reception of a large nut 36,1the nut retaining `'means comprises a pair of'seginents 37-37 recessed at 38-38 to receive the studs 3939 formed integral with the nut 36.

The segments 37-37 are slotted to receive the movable shank. It will be seen that the bridge portion of the other form of nut casingis eliminated to permit of a larger opening for the reception of the nut 3G, this being desirable in the construct-ion of a large size wrench.

In assembling the parts, the studs 39-39 `are inserted in the recesses 38-38 ofthe segments ST-37, whereupon these members may be placed in the opening rEhe slotted segments are aligned with the movable shank, and upon rotation of the nut 36, its

ythreads engage the teeth of the shank.

The nut 36 being held inthe opening 35, continued rotation thereof operates the shank. y That I claim is new and desire to secure by Letters Patent, is:

1. A wrench comprising a `shank provided with a stationary aw, a sleeve on said shank, a toothed movable shank provided with 'a jaw, said movable shank being mounted in said sleeve, a rotatable nut case in said first mentioned shank, a threaded nut in said nut case arranged to co-operate with the teeth of the movable shank, said first mentioned shank being recessed to receive a dog, a spring disposed within the recess and held therein, said spring being attached to Said dog, said `dog being'V provided with a shoulder arrange-d, when the dog isvvithin the recess, to prevent its accidental displacement, and a shelf on said shank adJacent l the4 recess on which said dog may rest.

2. A wrench comprising a shank provided with a stationary jaw, a sleeve on said shank, a toothed movable shank provided .with a jaw, said movable shank being mounted in said sleeve, a rotatable nut case in said first mentioned shank, a threaded nut in said nut case arranged to ce-operate with the teeth of the movable shank, said first mentioned shank being recessed to receive a dog, a spring disposed within the recess and held therein, and a shelf on said shank adjacent the recess on which said dog may rest. p

3. A wrench comprising a shank provided with a stationary aw, a sleeve on said shank,':a toothed movable shankprovided. with a jaw, said movable shank being mounted in said sleeve, a rotatable nut case in said first mentioned shank, a threaded nut in said Vnut ease arranged -to co-operate with the teeth of the movable shank, said irst mentioned shank being recessed to receive a dog, a spring vdisposed within the recess', and a shelf onv'said shank adjacent'the recess on which said dog may rest. 4

4. A wrench comprising' a shank provided with a stationary jaw. a sleeve on said shank, a toothed movable'shank provided with a jaw, said movable shank being mounted in said sleeve, a nut case in said lirst mentioned shank, a threaded nut in said lnut case arranged t0 co-operate with the teeth of the movable shank, said first mentioned shank being recessed to receive a dog, and a shelf 0n said shank adjacent the recess on which said dog may rest.

5. A wrench comprising a stationary shank having a j aw. a movable shank rotatably` mounted in the stationary shank, a

plunger disposed between the two Shanks,

one of said Shanks being recessed to receive the plunger, said plunger arranged for depression into said recess. and a shelf adja cent the recess upon which the plunger may rest.

6.' A wrench comprising a stationary shank'. 'a movable shank rotatably mounted in the stationary shank, said Shanks being provided with cooperating wrench jaws.

and a member reciprocablc between and 8. A Wrench :comprising a stationary shank, a movable shank rotatably mounted in the stationary shank, said shanks being provided with cooperating wrench jaws, and a look longitudinally reciprocable and rotatably journaled between said shanks, which can be reciprocated to its outer position and then rotated to lock said movable shank against rotation.

9. A wrench comprising a stationary member, a movable member` co-operating therewith, said members being provided with co-operating wrench jaws, and arranged to permit longitudinal movement and rotation with respect to the stationary member, and reciprocable means carried by the stationary member to prevent rotation of said movable member, and to permit 1ongitudinal movement.

10. A wrench comprising a stationary shank, a movable shank rotatably mounted in the stationary shank, said Shanks being provided with co-operating wrench jaws,

and reciprocable means provided in the path of normal rotation of the movable shank to permit the rotatable shank to be locked to prevent rotation.

ll. A wrench comprising a handle, a housing adjacent one end thereof, a rotatable nut casing in said housing, a nut rotatably mounted in the nut casing, a rotatable and longitudinally movable jaw provided with a toothed shank co-operating with said nut, and a spring pressed member between the handle and the shank of the movable jaw, said spring pressed member being adapted upon rotation to prevent rotation of the movable jaw.

In witness whereof, I hereunto subscribe my name this 10th day of October, 1921.

JOHN P. COUGHLIN. 

